Brief observations:
Obviously artisan-made, with superb attention to details throughout the piece.
Leather very supple and one piece, not laminated strips.
Extra reinforcement stitching at tension points to prevent separation.
Where the strap keeper's ends are joined, the leather is shaved so that the overlapping ends maintain the leather's thickness.
Not sure, but it appears that the leather is aniline-dyed, which produces richer and more lasting colors that resist fading and wear. The leather also breathes more easily than with surface dyes, and it ages better without cracking. Because aniline dyes penetrate the leather, scratches and dings do not reveal bare leather underneath. Most top quality, high-end leather handbags are aniline-dyed.
Overall, most delighted with this camera strap.

Great strap, high quality and well worth the wait

Flawless workmanship. Excellent, responsive service. Will purchase another strap without hesitation. Thank you!

Excellent, well-made product... they are just what I needed for my Leica M cameras. Their slim design does not constantly require pulling up when on your shoulder as many wider straps do, and they are comfortable around my neck for long periods. I also like the easily adjustable design. They are perfect for rangefinders and similar types of cameras, such as the Leica and Fuji. ac

I've been using this strap for over a year on my most-used camera, and it quickly became my favorite strap! High quality leather that has gotten softer over time. I also love the adjustable strap. Would highly, highly recommend!